High pressure safety valve: 2500-6000 PSI relief pressure One model fits all pressure - no spring to change Less “whistling” and chatter than competing brands Highly accurate over full range of pressure Fits any brand of pump General Pump Cold Water Safety Relief Valve, Side Discharge with Hose Barb, equipped to handle a flow rate of up to 6.0 GPM. Featuring a minimum PSI of 2000 and a maximum PSI of 6000, with a 3/8" NPT inlet and a side outlet with a 1/4" hose Barb. Capable of operating within a temperature range of 32 to 150° F. Designed and made in the USA